Vulnerability identifier: #VU33950

Vulnerability risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-1667

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ISC BIND
Server applications / DNS servers

Vendor: ISC

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

ISC BIND 9.x before 9.7.6-P1, 9.8.x before 9.8.3-P1, 9.9.x before 9.9.1-P1, and 9.4-ESV and 9.6-ESV before 9.6-ESV-R7-P1 does not properly handle resource records with a zero-length RDATA section, which allows remote DNS servers to cause a denial of service (daemon crash or data corruption) or obtain sensitive information from process memory via a crafted record.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ISC BIND: 4.9.2 - 9.7.6

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External links
http://lists.apple.com/archives/security-announce/2012/Sep/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2012-06/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2012-06/msg00010.html
http://marc.info/?l=bugtraq&m=134132772016230&w=2
http://rhn.redhat.com/errata/RHSA-2012-0717.html
http://rhn.redhat.com/errata/RHSA-2012-1110.html
http://secunia.com/advisories/51096
http://support.apple.com/kb/HT5501
http://www.debian.org/security/2012/dsa-2486
http://www.isc.org/software/bind/advisories/cve-2012-1667
http://www.kb.cert.org/vuls/id/381699
http://www.mandriva.com/security/advisories?name=MDVSA-2012:089
http://www.securityfocus.com/bid/53772
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2012&m=slackware-security.536004
http://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04952488
http://kb.isc.org/article/AA-00698

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.